20670334 has 8 divisors (see below), whose sum is σ = 32829408. Its totient is φ = 9727200.

The previous prime is 20670313. The next prime is 20670337. The reversal of 20670334 is 43307602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20670299 and 20670308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303942 + ... + 304009.

It is an arithmetic number, because the mean of its divisors is an integer number (4103676).

Almost surely, 2^20670334 is an apocalyptic number.

20670334 is a deficient number, since it is larger than the sum of its proper divisors (12159074).

20670334 is a wasteful number, since it uses less digits than its factorization.

20670334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607970.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20670334 is about 4546.4639006595. The cubic root of 20670334 is about 274.4411084419.

Adding to 20670334 its reverse (43307602), we get a palindrome (63977936).

The spelling of 20670334 in words is "twenty million, six hundred seventy thousand, three hundred thirty-four".